999424986 has 32 divisors (see below), whose sum is σ = 2285677440. Its totient is φ = 285390336.

The previous prime is 999424981. The next prime is 999425017. The reversal of 999424986 is 689424999.

999424986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

999424986 is a nontrivial binomial coefficient, being equal to C(44709, 2).

It is a super-2 number, since 2×999424986² = 1997700605282200392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999424981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83830 + ... + 95006.

It is an arithmetic number, because the mean of its divisors is an integer number (71427420).

Almost surely, 2^999424986 is an apocalyptic number.

999424986 is the 44708-th triangular number.

999424986 is an abundant number, since it is smaller than the sum of its proper divisors (1286252454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999424986 is a wasteful number, since it uses less digits than its factorization.

999424986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318.

The product of its digits is 10077696, while the sum is 60.

The square root of 999424986 is about 31613.6835247018. The cubic root of 999424986 is about 999.8082919170.

It can be divided in two parts, 9994 and 24986, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 999424986 in words is "nine hundred ninety-nine million, four hundred twenty-four thousand, nine hundred eighty-six".